Donald G. Hill, Ph.D.,
R.Gp., R.G., R.P.G.
"The World is my District"
California Registered Geophysicist No. 170
California Registered Geologist No. 6043
Kentucky Registered Professional Geologist No. 1624
Texas Licensed Professional Geophysicist No. 6289
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Contact: Donald G. Hill at: Home Phone: +(925) 947-1541, FAX: +(309) 437-5748, Cell/Business Phone: +(925) 437-5748